12-inch Saw Saw with sliding arm can cut much wider although the maximum depth remains the same. For instance, a 12-inch sliding compound miter saw will cut 2 x 16 wood in 90 degrees (crosscut), and when set at 45-degrees it can cut up to 2 x 12 lumber.Click to see full answer. Keeping this in consideration, how wide of a board can a 12 inch sliding miter saw cut?Like we said, the principal advantage of a sliding miter saw is that it allows you to cut wider boards. For a example, a 10” non-sliding saw will allow you to cross cut a board up to about 6” wide, while a 12” non-sliding will work for 8” boards (standard 2×8’s).Also, how wide of a board will a 10 inch sliding miter saw cut? A saw with a 10-inch blade makes right-angle cuts across a board 5 1/2 inches wide, sufficient for two-by-six lumber. The same 10-inch saw will cut a two-by-four at a 45-degree angle. Also to know, how wide can a sliding miter saw cut? The sliding saw can extend its reach out to 12 or even 16 inches, more than twice the width of a non-slider. If you’re routinely working with boards this wide, you will thank yourself every day for buying the sliding miter saw. And since you’re only cutting once, all your cuts will be cleaner and more precise.Can a 12 inch miter saw cut a 4×4?A 12-inch miter saw blade is bigger than the 10-inch blade and it is able to cut wider, longer thicker pieces of wood. And with an appropriate miter saw it will easily take care of the 4×4 without an error.